/*
 *MIT License
 *
 *Copyright (c) 2019 chenshuai cs4380@163.com
 *
 *Permission is hereby granted, free of charge, to any person obtaining a copy
 *of this software and associated documentation files (the "Software"), to deal
 *in the Software without restriction, including without limitation the rights
 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *copies of the Software, and to permit persons to whom the Software is
 *furnished to do so, subject to the following conditions:
 *
 *The above copyright notice and this permission notice shall be included in all
 *copies or substantial portions of the Software.
 *
 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *SOFTWARE.
 */

package com.cs.cslc.common.util;

import java.util.ArrayList;
import java.util.List;

/**
 * ListUtils list集合工具类.
 *
 * @author cs
 * @version 1.0
 * @date 2019-12-05 11:08
 * @description
 */
public class ListUtils {
    /**
     * object转换为ArrayList
     *
     * @param obj   object对象
     * @param clazz 集合中的对象
     * @return 集合对象, 如何obj为null则返回空集合
     */
    public static <T> List<T> castArrayList(Object obj, Class<T> clazz) {
        List<T> result = new ArrayList<>();
        if (obj == null) {
            return result;
        }
        if (obj instanceof List<?>) {
            for (Object o : (List<?>) obj) {
                result.add(clazz.cast(o));
            }
        }
        return result;
    }
}